Antenna



FIG. 1 is a perspective view of an antenna according to the invention.

FIG. 2 is a top plan view of the antenna depicted in FIG. 1.

FIG. 3 is a close-up top plan view of a portion of FIG. 2; and,

FIG. 4 is a bottom plan view of the antenna depicted in FIG. 1.

The broken lines illustrate portions of the antenna which form no part of the claimed invention. 

CLAIM I claim the ornamental design for an antenna, as shown and described. 